High performance zoom lenses with a forward located stop

Iain A. Neil

doi:10.1117/12.974870

19 October 2012 High-performance zoom lenses with a forward-located stop

Iain A. Neil

Proceedings Volume 8488, Zoom Lenses IV; 84880L (2012) https://doi.org/10.1117/12.974870
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

Abstract

With the advent of digital camera systems which provide high performance imaging combined with reduced size, weight and cost, this has created a demand for zoom lenses to meet new specific requirements. In addition, there is also a need to meet preferred optical characteristics; therefore, contemporary zoom lens optical designs may become less attractive for use with modern digital camera systems. Zoom lens optical designs which more closely match digital camera requirements such as high resolution, high contrast, high relative illumination (for low picture shading), low residual chromatic aberration and near telecentric radiation output at the image sensor, are described in this paper. To achieve the desired requirements, the optical design power configuration of these zoom lenses comprise four lens groups, with a first negatively powered lens group followed by three positively powered lens groups. To provide zooming, a movable optical stop is located after the negatively powered lens group and is followed by two positively powered movable lens groups. Additional features including low ‘breathing’ throughout the focus and zoom ranges are also described via the optical design examples given.

Citation Download Citation

Iain A. Neil "High-performance zoom lenses with a forward-located stop", Proc. SPIE 8488, Zoom Lenses IV, 84880L (19 October 2012); https://doi.org/10.1117/12.974870

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available